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Subject: Re: [PATCH 0/2] Add EDAC support for Kryo CPU core caches
To:     Sai Prakash Ranjan <saiprakash.ranjan@codeaurora.org>
Cc:     Andy Gross <agross@kernel.org>,
        Bjorn Andersson <bjorn.andersson@linaro.org>,
        Mark Rutland <mark.rutland@arm.com>,
        Rob Herring <robh+dt@kernel.org>, devicetree@vger.kernel.org,
        Borislav Petkov <bp@alien8.de>,
        Mauro Carvalho Chehab <mchehab@kernel.org>,
        Tony Luck <tony.luck@intel.com>,
        Robert Richter <rrichter@marvell.com>,
        linux-edac@vger.kernel.org, tsoni@codeaurora.org,
        linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org,
        Evan Green <evgreen@chromium.org>,
        Stephen Boyd <swboyd@chromium.org>, psodagud@codeaurora.org,
        linux-arm-kernel@lists.infradead.org, baicar@os.amperecomputing.com
References: <0101016ed57a10a8-bd8fbdb9-a5cd-4460-bae6-c5c35f0eed88-000000@us-west-2.amazonses.com>
From:   James Morse <james.morse@arm.com>
Message-ID: <0769b7cb-4e01-eb83-8ad4-b29b4fafafd4@arm.com>
Date:   Wed, 15 Jan 2020 18:46:07 +0000
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Hi Sai,

(CC: +Tyler)

On 05/12/2019 09:52, Sai Prakash Ranjan wrote:
> This series implements EDAC support for error reporting on
> Kryo{3,4}XX CPU caches L1,L2, L3-SCU. All the cores(big.LITTLE)
> in Kryo{3,4}XX CPUs implement RAS extensions and use interrupt
> based ECC mechanism to report errors.
> 
> This series has been tested on SC7180, SDM845, SM8150 SoCs with
> Kryo{3,4}XX CPU cores based on ARM Cortex-A55, Cortex-A75 and
> Cortex-A76.
> 
> This implementation is platform specific in contrast to the
> patch posted last time for generic error reporting on arm cortex
> implementations with RAS extensions by Kyle Yan.
>  - https://patchwork.kernel.org/patch/10161955/

I think that series was dropped because it was too soc-specific and overlaps with the v8.2
kernel first support. That series was superseded by:
lore.kernel.org/r/1562086280-5351-1-git-send-email-baicar@os.amperecomputing.com

Can you work with Tyler on a combined series? The combined support may need to look quite
different. (DT and big/little being the obvious differences).

I'm afraid this is the tip of the kernel-first-RAS iceberg.


Thanks,

James